Some people, ordinarily Those people with numerous brain accidents and mental disability, have tonic seizures consisting of sudden stiffness inside the arms and system, that may lead to falls and injuries. Unlike the other kinds of hypersensitivity reactions, type IV reactions are cell-mediated a

A group of thunderstorms about Brazil photographed by the Space Shuttle Challenger This is the most common style of thunderstorm development. Experienced thunderstorms are discovered in the vicinity of the middle of your cluster, while dissipating thunderstorms exist on their downwind side. Multicel